The Sigma Pi Store

If you’re looking for a thick, structured tee that’s also super soft and breathable—look no further! The unisex garment-dyed heavyweight t-shirt ticks all the boxes and is made of 100% ring-spun cotton. The regular t-shirt style will complement most looks and fit you to a tee.

• 100% ring-spun cotton
• Fabric weight: 6.1 oz/yd² (206.8 g/m²)
• Garment-dyed
• Relaxed fit
• 7/8″ double-needle topstitched collar
• Twill-taped neck and shoulders for extra durability
• Double-needle armhole, sleeve, and bottom hems
• Blank product sourced from Honduras

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide

A sturdy and warm sweatshirt bound to keep you warm in the colder months. A pre-shrunk, classic fit sweater that’s made with air-jet spun yarn for a soft feel.

• 50% cotton, 50% polyester
• Pre-shrunk
• Classic fit
• 1x1 athletic rib knit collar with spandex
• Air-jet spun yarn with a soft feel
• Double-needle stitched collar, shoulders, armholes, cuffs, and hem

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide

Dad hats aren't just for dads. This one's got a low profile with an adjustable strap and curved visor.

• 100% chino cotton twill
• Green Camo color is 35% chino cotton twill, 65% polyester
• Unstructured, 6-panel, low-profile
• 6 embroidered eyelets
• 3 ⅛” (7.6 cm) crown
• Adjustable strap with antique buckle
• Blank product sourced from Vietnam or Bangladesh

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide

Dad hats aren't just for dads. This one's got a low profile with an adjustable strap and curved visor.

• 100% chino cotton twill
• Green Camo color is 35% chino cotton twill, 65% polyester
• Unstructured, 6-panel, low-profile
• 6 embroidered eyelets
• 3 ⅛” (7.6 cm) crown
• Adjustable strap with antique buckle
• Blank product sourced from Vietnam or Bangladesh

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide

Orders must be placed by December 10th to ensure delivery by the holidays.

A sturdy and warm sweatshirt bound to keep you warm in the colder months. A pre-shrunk, classic fit sweater that's made with air-jet spun yarn for a soft feel and reduced pilling.

• 50% cotton, 50% polyester
• Pre-shrunk
• Classic fit
• 1x1 athletic rib knit collar with spandex
• Air-jet spun yarn with a soft feel and reduced pilling
• Double-needle stitched collar, shoulders, armholes, cuffs, and hem

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide

Dad hats aren't just for dads. This one's got a low profile with an adjustable strap and curved visor.

• 100% chino cotton twill
• Green Camo color is 35% chino cotton twill, 65% polyester
• Unstructured, 6-panel, low-profile
• 6 embroidered eyelets
• 3 ⅛” (7.6 cm) crown
• Adjustable strap with antique buckle
• Blank product sourced from Vietnam or Bangladesh

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide

If you’re looking for a thick, structured tee that’s also super soft and breathable—look no further! The men’s garment-dyed heavyweight t-shirt ticks all the boxes and is made of 100% ring-spun cotton. The regular t-shirt style will complement most looks and fit you to a tee.

• 100% ring-spun cotton
• Fabric weight: 6.1 oz/yd² (206.8 g/m²)
• Garment-dyed
• Relaxed fit
• 7/8″ double-needle topstitched collar
• Twill-taped neck and shoulders for extra durability
• Double-needle armhole, sleeve, and bottom hems
• Blank product sourced from Honduras

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide